FSD | R1 | R2 |
1000v | 1M | 1K |
100v | 10M | 10K |
10V | 10M | 100K |
1V | 900K | 100K |
0.1V | 0 | 100K |
FSD | R1 | R2 |
1A | 0 | 0.1 ohm |
100mA | 0 | 1 ohm |
10mA | 0 | 10 ohm |
1mA | 0 | 100 ohm |
500uA | 0 | 500 ohm |
100uA | 0 | 1K |
10uA | 0 | 10K |
1uA | 0 | 100K |
The +ve and -ve supplies can be of any value between 3 and 18 volts and they need not be symetrical.
The 10k pot is used for zero setting.
If the output from a diode type radiation meter was connected to this circuit, the end product would be a very sensitive field strength meter.